There are already far too many laws in the US. We should probably focus on making less things illegal rather then more.
When making things illegal, there is a lot of overhead involved. Take your examples for instance.
1) Make it illegal for TV commercials to display 10 lines of size 1 font at the bottom of a TV ad for 2 seconds. Nobody can see it. Nobody can read it even if they could see it. The law should be something like this:
"Any textual information displayed on a tv commercial should be of big enough size to be easily read in its entirety in the time displayed!"
Say this law is passed. Now who determines what size is big enough and how long is long enough. Suppose I'm a nearly blind, slow reader. Maybe 30 seconds at a size of 2 inches high is not a long enough time or large enough size for me? You could say that you mean an "average" person, but then it must be established what an "average" person is. Who does that? Then aren't you discriminating against people who don't fit the average? Should it be set to the lowest common denominator? In that case, you are boring to death people who can read exceptionally fast. I'm not going to stay tuned to text that stays around for 30 seconds when it only takes me 1 second to read it!
Now suppose we come up with an acceptable definition of "big enough" and "long enough", which will be a compromise definition. How do we enforce this definition? Punishment. What is an appropriate punishment for people that do not make the text big enough? For those that miss the size by a fraction of an inch, what is the punishment? Oh, and what about for people that the size is big enough for a 55" tv but not for a 25" tv? Yikes.
So, suppose we come up with a suitable punishment for these law breakers. Who will enforce this punishment? What if they do not pay the fine? Do we throw them in our already crowded prisons or build new prisons? Where does this money come from to enforce this law? Do we have monitors who scan the tv specifically for this rule, or add it to someone's position who already monitors things? Or make it reporting based, so only when it is reported it is punished.
There are lots more questions as well, this is just the tip of the iceburg.